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Finding the Fourth Proportional to 186,479.20, 279,389.40 and 180,312.40

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Solution

The fourth proportional to 186,479.20, 279,389.40 and 180,312.40 is: 270,150.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,479.20 : 279,389.40 = 180,312.40 : x
  2. Step 2: Convert to fraction form
    186,479.20/279,389.40 = 180,312.40/x
  3. Step 3: Cross multiply
    186,479.20x = 279,389.40 × 180,312.40
  4. Step 4: Simplify right side
    186,479.20x = 50,377,373,248.56
  5. Step 5: Solve for x
    x = 50,377,373,248.56/186,479.20
  6. Step 6: Final answer
    x = 270,150.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.